Egyptian security use water cannon as protesters throw stones into the grounds of the presidential palace in Cairo on Feb. 11, 2013, as the opposition held rallies to mark the second anniversary of former president Hosni Mubarak's overthrow. Egyptian central bank governor Hisham Ramez was unharmed after his car was stolen and security guard murdered in a Feb 12 carjacking.

Egypt central bank chief Hisham Ramez has survived a daring robbery in Cairo. Four gunmen made off with his car and murdered one of his security guards.

Ramez said he did not think the attack was political, according to Al Arabiya news. "The armed attack was for the purpose of robbery, not assassination,” he told Al Arabiya.

Ramez was not in the car at the time of the attack: the car was headed to pick him up at the bank, reports the Associated Press, when the incident took place.

The Associated Press called the carjacking a "random criminal act."

The attack, however, is another example of the instability that has hit Cairo since the fall of Hosni Mubarak, writes AFP, citing a Feb. 12 attack on an Egyptian luxury hotel by a group of masked men, not far from the capital's central Tahrir Square.

Protesters surged in Cairo on Feb. 11, calling for the resignation of Egyptian President Mohamed Morsi on the anniversary of Mubarak's 2011 fall.